Radiofrequency Ablation Catheter With Integrated Movable Guide Wire
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional radiofrequency ablation catheters require frequent insertion and extraction of a separate guide wire, leading to increased operation time and risk, and lack auxiliary functions beyond guiding.
Innovation Solution
A radiofrequency ablation catheter with a movable guide wire integrated into the catheter design, allowing the guide wire to change between compact and expanded states to facilitate movement and positioning without separate insertion and extraction, and incorporating a movable guide wire that can function as a wall-apposition-adjusting wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate guide wire is used to guide the radiofrequency ablation catheter, then the catheter can be accurately positioned in the blood vessel, but the guide wire needs to be inserted and extracted multiple times when moving to different ablation areas, increasing operation time and risk
Solution Approach 1:
The guide wire and radiofrequency ablation catheter are merged into a single integrated device. The guide wire can be moved relative to the catheter body to guide the catheter to different positions, eliminating the need for separate guide wire insertion and extraction operations when moving between ablation areas.
Solution Approach 2:
The guide wire is designed to be movable within the catheter body, allowing dynamic adjustment of the guide wire position to reach different target areas. This dynamic structure enables the guide wire to extend beyond the catheter tip for guidance, then retract for ablation, and extend again for repositioning without removing the catheter.
2Adaptability or versatility
If a separate guide wire is used, then the guiding function is provided, but the storage and management of the guide wire and catheter must be carried out separately, which is inconvenient
Solution Approach 1:
The guide wire and catheter are combined into one integrated device with the guide wire stored within the catheter body. This unified structure allows both components to be stored and managed together as a single unit, improving convenience while maintaining the guiding function.
3Adaptability or versatility
If the guide wire is inserted and extracted multiple times for different ablation areas, then access to multiple targets is achieved, but the intraoperative risk increases
Solution Approach 1:
The movable guide wire allows the catheter to dynamically adapt to different ablation areas without extraction. The guide wire can be extended to guide the catheter to new positions, then retracted to maintain a stable configuration during ablation, reducing the risks associated with repeated insertion and extraction.
Solution Approach 2:
The catheter remains continuously in position within the blood vessel while the guide wire moves to enable access to multiple ablation areas. This continuous presence eliminates the interruptions and risks associated with removing and reinserting the catheter between ablation sites.
Data Source
AI summary
A radio frequency ablation catheter having the function of a movable guide wire, comparing an electric support, a catheter body and a control handle which are sequentially provided. The catheter body is provided there with a cavity for the sliding of the movable guide wire. The distal end of the movable guide wire passes through the catheter body and protects from the distal end of the electric support, a soft guide wire provided at the distal end of the movable guide wire is always kept outside the electric support. The proximal end of the movable guide wire protects from the proximal end of the catheter body and enters the control handle, then, the proximal end of the movable guide wire is fixed to a controlling member provided on the control handle or is fixed to a controlling member provided outside the control handle.